Series mould-club filter: the equipment is a hermetically sealed chamber made of 1CR18NiTi stainless steel which is set inside gritted rod, therefore gets filtrated and clean. The equipment is widely used in petroleum industry, medicine industry, brew manufacturing and beverage industry. It is an ideal equipment to procure high quality water. Water clarifier: this filter is designed for dinking water treatment. It can clear away alien color and foreign substance from the water and can remove heavy metal such as mercury, lead, cadmium, zinc, iron, manganese and chromium, and hydrogenate, sulphide, and small amount of remaining chloride. The filter is the ideal equipment for drinking water, foodstuff, beverage, and pharmaceutical industries. Sodium ion exchanger: the exchanging device is for reducing the hardness of hard water. Raw water goes through the exchanger from top to bottom, to be softened by the sodium ion-exchanger inside the device. The positive ions of magnesium and calcium are exchanged with that of sodium. Then the raw water becomes soft water containing very few ions of magnesium and calcium. The soft water can be used for feeding water of boiler and for some industrial uses. Due to its high dissolving ability in water, sodium ions will not form hard sediment in the boiler and can be easily removed. Raw water shall be filtered and settled with almost on suspended before coming into the ion exchange device. After being softened in the device, the water hardness shall be less than 0.03mg equivalent/L. YF hollow-fiber ultrafilter: this ultrafilter adopts dissymmetrical semipermeable film which is made from macromolecule material with special process. The raw liquid flows under pressure, inside or outside the film. The macromolecule substance and colloid particles in the raw liquid are clogged at the film surface and are brought away by circulating raw liquid. Then the raw liquid becomes inspissated, and further more, the substance in liquid is separated, concentrated.